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Audio or video file Choose File

Converting only changes the format, not quality already lost — e.g. MP3 → WAV won't restore detail dropped during the original MP3 encoding. Start from your best-quality source for the best result.

What Is an Audio Converter?

An audio converter changes the file format of an audio recording — from whatever you have to whatever you need. Different devices, apps, and platforms expect different formats: MP3 for broad compatibility, WAV or FLAC for lossless editing, M4A for Apple devices, Opus for efficient streaming.

Our converter decodes your source file and re-encodes it in the target format, keeping quality as high as that format allows — lossless formats (WAV, FLAC, AIFF) preserve the audio exactly, while compressed formats (MP3, M4A, OGG, Opus) use high-quality settings by default.

What You Get

🔄 Converted File

Your audio, re-encoded in the exact format you chose, ready to download.

Who Uses an Audio Converter?

🎧

Music Fans

Convert a track to the format your player or device actually supports.

🎚️

Producers

Get a lossless WAV or FLAC copy of a file for editing in a DAW.

🎬

Video Editors

Convert audio to the format your editing software expects before importing.

📱

Mobile Users

Convert to M4A or Opus for smaller files that still sound great.

How to Convert an Audio File

Pick a Format

Choose MP3, WAV, FLAC, M4A, OGG, Opus, or AIFF.

Upload the Audio

Drag your audio file into the box above. Supports MP3, WAV, FLAC, M4A and more.

Download the Result

Download the converted file in your chosen format.

Choosing a Format

MP3 — the safest default. Plays on essentially everything, and at 256 kbps (the default — you can pick 128/192/256/320 kbps) it's transparent quality for almost all listening situations.
Quality/bitrate — for MP3, M4A, OGG, and Opus you can choose the output bitrate: higher kbps means better quality and a larger file, lower kbps means a smaller file at some quality cost. For FLAC you can instead choose a compression level (0-8) — since FLAC is always lossless, this only trades encoding time for file size, it never changes audio quality.
WAV / AIFF — uncompressed, larger files, the standard choice when importing into a DAW for further editing since there's no decode/re-encode quality cost at each editing step.
FLAC — lossless like WAV/AIFF but compressed to a smaller file size, a good middle ground for archiving a high-quality copy without WAV's full file size.
M4A (AAC) — the native format for Apple's ecosystem; convert to this if a specific app or device expects it.
OGG / Opus — smaller files at good quality, common in web/streaming contexts and some open-source software.
Remember: converting only changes the container and encoding — it's a one-way street when going from lossy to lossless. Always keep your original source file if you might need to convert to a different format again later, rather than re-converting from an already-compressed copy.

Frequently Asked Questions

Is the audio converter really free?

Yes, completely free. No trial period, no credit card, no catch.

Which format should I pick?

MP3 for general use and maximum compatibility. WAV, FLAC, or AIFF if you need lossless quality for editing. M4A for Apple devices. OGG or Opus for smaller files at good quality.

Will converting to a lossy format reduce quality?

Converting from a lossless source to a compressed format (MP3, M4A, OGG, Opus) does involve some quality loss, though our default settings are tuned to keep it imperceptible for most listening. Converting to a lossless format (WAV, FLAC, AIFF) doesn't lose any additional quality during this step — but it also can't restore quality that was already lost earlier. If your source file is already an MP3, converting it to WAV just gives you a bigger file with the same MP3-level quality, not a lossless-quality upgrade.

What audio formats can I upload?

You can upload MP3, WAV, FLAC, M4A, AAC, OGG, AIFF, WMA, Opus, AMR, APE, WavPack (WV), and most other common audio formats. You can also upload video files (MP4, MOV, MKV, AVI, WebM, FLV, WMV, MPG, 3GP, and more) — we'll automatically extract the audio track and convert it to your chosen format. Maximum file size is 100 MB for audio, 1 GB for video.

I converted an MP3 to FLAC — is it lossless now?

The FLAC file is a lossless container, but it can only preserve what's already in the source. Since the original MP3 already discarded some audio data during its own encoding, converting it to FLAC afterward doesn't bring that data back — you get a losslessly-encoded copy of MP3-quality audio, not a true lossless master.

Free Audio Converter Online